What you need to know this instant.

100 Celebrity Halloween Costume Ideas

Still stumped about who—or what—to dress as for Halloween? We don't blame you—it's a pretty major decision that you only get to make once every 365 days. That's why we've compiled a can't-miss list of the best movie, music, television, historical and pop cultural characters sure to inspire.

Click through for our carefully-assembled list, plus a few items you'll need to get each look.

Cher, Dionne or Tai from Clueless

You will need: a plaid skirt and matching blazer, a mini backpack (preferably trimmed with feathers), a '90s-era cell phone, thigh-high socks.

Paramount/Courtesy Neal Peters Collection

Keep up with the Lucky team on Twitter: